CVE-2021-42373 (GCVE-0-2021-42373)
Vulnerability from cvelistv5 – Published: 2021-11-15 00:00 – Updated: 2024-08-04 03:30
VLAI
EPSS
VEX
Summary
A NULL pointer dereference in Busybox's man applet leads to denial of service when a section name is supplied but no page argument is given
Severity
5.5 (Medium)
CWE
Assigner
References
5 references
Impacted products
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"lastModified": "2024-11-21T06:27:41.137",
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"published": "2021-11-15T21:15:07.473",
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Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20211223-0002/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T14:52:56+00:00",
"cve": "CVE-2021-42373",
"id": "CVE-2021-42373",
"initial_release_date": "2021-11-09T00:00:00+00:00",
"product_status:known_not_affected": "3",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "busybox: NULL pointer dereference in man applet leads to denial of service when a section name is supplied but no page argument is given",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-42373.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T02:00:56Z",
"cve": "CVE-2021-42373",
"id": "CVE-2021-42373",
"initial_release_date": "2023-02-15T03:37:16Z",
"product_status:known_affected": "4",
"product_status:known_not_affected": "10",
"product_status:recommended": "135",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-42373",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-42373.json",
"version": "30"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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